.pf-tool{flex-direction:column;gap:1rem;display:flex}.pf-group-label{letter-spacing:.05em;color:var(--text-dim);font-size:.78rem}.pf-heading{margin:.2rem 0 .4rem;font-size:1.05rem}.pf-steps,.pf-trainer,.pf-explorer{flex-direction:column;gap:.6rem;display:flex}.pf-step-card{border-left:3px solid var(--accent);background:var(--bg-hover);min-height:7.5rem;padding:.7rem .9rem}.pf-step-rule{color:var(--text);margin:0 0 .4rem;font-size:.92rem}.pf-step-math{overflow:auto hidden}.pf-step-nav{align-items:center;gap:.6rem;display:flex}.pf-step-count{color:var(--text-dim);font-variant-numeric:tabular-nums;font-size:.84rem}.pf-tool .pf-btn{min-height:2.2rem;color:var(--text);background:var(--bg-surface);border:1px solid var(--border);cursor:pointer;border-radius:0;padding:0 .9rem;font-size:.9rem}.pf-tool .pf-btn:hover:not(:disabled){border-color:var(--accent)}.pf-tool .pf-btn:disabled{opacity:.45;cursor:default}.pf-visual{margin:0}.pf-controls{grid-template-columns:repeat(auto-fit,minmax(min(100%,150px),1fr));align-items:end;gap:.7rem .9rem;display:grid}.pf-field{flex-direction:column;gap:.25rem;min-width:0;display:flex}.pf-tool .pf-wide{grid-column:span 2}@media (width<=480px){.pf-tool .pf-wide{grid-column:auto}}.pf-tool .pf-field input:is([type=number],[data-num]){width:100%;min-width:0;color:var(--text);background:var(--bg-surface);border:1px solid var(--border);border-radius:0;padding:.45rem .55rem;font-size:.95rem}.pf-tool .pf-field input[type=range]{width:100%;accent-color:var(--accent)}.pf-formula{margin:0;overflow:auto hidden}.pf-table-note{color:var(--text-dim);margin:0;font-size:.86rem}.pf-table-wrap{overflow-x:auto}.pf-tool .pf-table{border-collapse:collapse;font-variant-numeric:tabular-nums;width:100%;font-size:.88rem}.pf-tool .pf-table th,.pf-tool .pf-table td{text-align:right;white-space:nowrap;border-bottom:1px solid var(--border);padding:.35rem .6rem}.pf-tool .pf-table td:nth-child(2){text-align:left}.pf-tool .pf-table thead th{letter-spacing:.04em;color:var(--text-dim);font-size:.76rem;font-weight:600}.pf-tool .pf-table tr.pf-on td,.pf-tool .pf-table tr.pf-on th{color:var(--text);font-weight:700}